Definition of redruthite in English:

redruthite

noun

Mineralogy
rare
  • A dark grey or black copper ore mineral. Now usually called chalcocite.

Origin

Mid 19th century; earliest use found in James Nicol (1810–1879), geologist. From Redruth, the name of a town in Cornwall, where the mineral was first found + -ite.

Pronunciation

redruthite

/ˌrɛdˈruːθʌɪt//ˈrɛdruːθʌɪt/